Draft-equalizer.



I. D. RYAN. DRAFT EQUALIZBR. APPLICATION FILED SEPT. 28, 1909.

Patented Nov. 19, 1912.

Wahmm uoummu PLANOGRAPH C0,.WASIIINUTON, D4 c l h l@ IRNEY 1). RYAN, OFDEVILS LAKE, NORTH DAKOTA.

DRAFT-EQUALIZEH.

Specification of Letters Patent.

Application filed September 28, 1909.

Patented Nov. 19, 1912. Serial No. 519,940.

To all whom it may concern;

Be it known that 1, 11mm. l). RYAN, a citizen oi"- the United States,residing at Devils Lake in the county of Ramsey, State of: North Dakota,have invented certain new and useful Improvements in Draft-Equalizers;and it do hereby declare the following to be a full, clear, and exactdescription oi the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The invention relates to a draftequalizer and more particularly to theclass of equal r zers for use on plows, cultivator-s or vehicles.

The primary object of the invention is the provision of a draftequalizer in which the strain upon the evener bar or beam is relievedthrough the medium of a flexible chain or cable attached to said evenerbar or beam and. working over a pulley mounted in the rear thereof.

Another object of the invention is the provision of a draft equalizer inwhich the evener beam is so mounted to permit slight displacementlongitudinally of its support ing bracket so as to relieve sudden shocksthereto and to overcome full strain or in other words minimize thestress upon the same when in operation by means of tlcXible elementconnected thereto at opposite ends and. working over a pulley adjustablymounted in the bracket supporting equalizer.

A. further object oi the invention is the provision of a draft equalizerwhich is si1n ple in construction, thoroughly reliable and ei'licient inoperation and inexpensive in the manufacture.

With these and other objects in view the invention consists in theconstruction, combination and arrangement of parts as will behereinafter more fully described in detail, illustrated in theaccompanying drawings which disclose the preferred form and embodimentof the invention, and as set forth in the claim hereunto appended.

In the drawings z-F igure 1 is a top plan view of a draft equalizerconstructed in accordance with the invention. Fig. 2 is a rear elevationthereof. Fig. 3 is a sectional view on the line 33 of Fig. 2. Fig. i isa detail perspective view of the bracket and guide pulley supportedthereby.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawings.

In the drawings the numeral 5 designates an evener bar which may beconstructed of any suitable material and of any desirable lengthalthough it is preferably of rectangular shape in cross section and thisevener bar is supported in a bracket comprising a single piece of metalformed with horizontally disposed spaced parallel guide ears or eX-tensions 6 the latter containing near their outer end registeringelongated guide slots 7, the same being engaged by a connecting pin 8mounted centrally in the evener bar so that the latter may have slightmovement longitudinally with respect to the guide ears 6 of the bracket.This bracket is formed with oppositely directed spaced parallelattaching ears 9 the same containing registering apertures 10 to permitthe bracket to be detachably connected to the frame of a cultivatingimplement or to a vehicle in the ordinary well known manner.

Connected near opposite ends of the evener bar by means of pivotalclevises 11 are the usual double-trees 12 to which latter are adapted tobe attached draft animals.

Mounted between the guide ears 6 of the bracket a considerable distancein rear of the evener bar 5 is a grooved pulley 13 the latter connectedto said ears by means of a pin 14 the same engaging a pair of a seriesof spaced registering openings 15 contained in the ears 6 and by theseopenings 15 the said pulley may be adjusted toward and away from theevener bar 5 when the occasion may demand.

Mounted at opposite ends of the evener bar 5 are collars 16, one ofwhich is formed with an eye 17 supporting a ring 18 to which isconnected one end of a flexible cable 19 the latter trained over thepulley and ha ing its opposite end detachably connected by means of aring 20 to a hook 21 formed on the remaining collar 16 carried by theevener bar.

It is obvious that by the particular mounting of the evener bar 5 in thesupporting bracket that the ordinary or usual strain will be relievedfrom said evener bar for the reason that said strain will exist and betaken up by the flexible cable 19 connected to said evener bar. It is ofcourse to be understood that should the cable 19 become stretched thesame may be shortened at the will of the operator.

It will be observed from an inspection of the drawings that thearrangement of the ears 6 and 9 causes the latter to bindingly engagethe other attaching member when pnll is eXerted upon the ears 6.

From the foregoing, the construction and operation of the invention willbe clearly apparent without the necessity of a more extendedexplanation, therefore the same has been omitted.

lVhat is claimed is The combination with an evener bar having draftmembers connected thereto adjacent to the ends, of a bracket connectedto the central portion of the bar, said bracket being formed of a singlepiece of metal and comprising a vertical base member, rearwardlyextending ears formed at the lower end and central portion of said baseand extending laterally therefrom in spaced parallel relation,relatively long forwardly extending ears projecting laterally from theon the opposite side from the rearwardly extending ears and havinglongitudinally disposed slots in the terminals for engagement with adraft element, a pulley carried between the forward ears adjacent to thebase plate and a cable connected to the ends of the draft bar at itsterminal and reeved through the pulley.

In testimony whereof, I affix my signature, in presence of twowitnesses.

IRNEY D. RYAN.

Witnesses C. M. FIS ER, Josnri-i RYAN.

Copies of this patent may be Commissioner of Patents,

Washington, D. C.

